Electron Configuration and Ion Identification

The video tutorial explains the formation of ions through the loss or gain of electrons. It begins with defining ions as charged particles and identifying them based on their charge. The tutorial then provides examples of ion formation using sodium, fluorine, and oxygen. Sodium forms ions by losing an electron, resulting in a positive charge. Fluorine gains an electron to achieve a full outer shell, resulting in a negative charge. Oxygen gains two electrons to form a stable ion with a negative charge. The video emphasizes the importance of full electron shells for stability.

What is an ion?

• A neutral particle

• A charged particle

• A particle with no electrons

• A particle with only protons

How can you identify an ion?

• By its color

• By its size

• By its mass

• By its charge

What is the electron configuration of a neutral sodium atom?

• 2 in the first shell, 8 in the second shell, 1 in the third shell

• 2 in the first shell, 7 in the second shell, 2 in the third shell

• 1 in the first shell, 8 in the second shell, 2 in the third shell

• 2 in the first shell, 8 in the second shell, 2 in the third shell

What happens to sodium when it loses an electron?

• It remains neutral

• It becomes positively charged

• It gains a neutron

• It becomes negatively charged

Why does sodium prefer to lose one electron rather than gain seven?

• It cannot gain electrons

• Losing one is less effort

• It has no electrons to lose

• Gaining seven is easier

What is the electron configuration of a neutral fluorine atom?

• 2 in the first shell, 7 in the second shell

• 2 in the first shell, 8 in the second shell

• 1 in the first shell, 8 in the second shell

• 2 in the first shell, 6 in the second shell

How does fluorine achieve a full outer shell?

• By gaining one electron

• By gaining seven electrons

• By losing one electron

• By losing seven electrons

What is the charge on a fluorine ion after gaining an electron?

• Positive two

• Neutral

• Negative one

• Positive one

What is the electron configuration of a neutral oxygen atom?

• 2 in the first shell, 6 in the second shell

• 2 in the first shell, 8 in the second shell

• 2 in the first shell, 5 in the second shell

• 1 in the first shell, 7 in the second shell

How does oxygen achieve a full outer shell?

• By gaining two electrons

• By gaining six electrons

• By losing two electrons

• By losing six electrons